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Finding the Fourth Proportional to 64,205.20, 96,210.60 and 43,404.40

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Solution

The fourth proportional to 64,205.20, 96,210.60 and 43,404.40 is: 65,040.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,205.20 : 96,210.60 = 43,404.40 : x
  2. Step 2: Convert to fraction form
    64,205.20/96,210.60 = 43,404.40/x
  3. Step 3: Cross multiply
    64,205.20x = 96,210.60 × 43,404.40
  4. Step 4: Simplify right side
    64,205.20x = 4,175,963,366.64
  5. Step 5: Solve for x
    x = 4,175,963,366.64/64,205.20
  6. Step 6: Final answer
    x = 65,040.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.